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Method for treating wastewater containing impregnating agent

A treatment method and wetting agent technology, which are applied in the field of wastewater treatment containing wetting agents, can solve problems such as failure to meet environmental protection standards, low biodegradability, and complex wastewater components.

Pending Publication Date: 2019-08-13
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Infiltrant wastewater has complex structure, various varieties, high chemical stability and low biodegradability, thus becoming an important environmental pollutant
[0004] For the infiltrant wastewater, the existing methods mostly use filtration and adsorption separation for treatment. However, due to the complex composition of this type of wastewater, even after filtration and adsorption, the indicators of the treatment solution still cannot meet the existing environmental protection standards. And the process is more complex

Method used

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  • Method for treating wastewater containing impregnating agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Present embodiment uses waste water composition to see table 1

[0029] Table 1

[0030] project Fat, mg / mL COD, mg / mL Heavy metal (Pb), mg / mL SS, mg / mL pH concentration 953.37 15326.58 8.43 753.22 7.1

[0031] Wastewater treatment methods are as follows:

[0032] (1) Put 100kg of waste water containing wetting agent into the insulated reaction kettle, stir, and the stirring speed is 100-150r / min;

[0033] (2) Direct current is used to energize the waste water containing wetting agent, the anode material is iron, the cathode material is graphite, and the voltage is 15V;

[0034] (3) Add NaOH in the reactor, stir well, make pH between 8.8-9.0;

[0035] (4) Add 1 kg of polyacrylamide to the reaction kettle, and after half a minute, add 2 kg of potassium aluminum sulfate dodecahydrate, stir for 0.5 min, and the stirring speed is 200-300 r / min. After stirring, the detected pH is 7.2, which meets the requirements;

[0036] (5) Add 5kg of ...

Embodiment 2-3

[0039] The difference from Example 1 is that the voltages in step (2) are 22V and 30V respectively.

Embodiment 4

[0041] The difference from Example 1 is that the amount of polyacrylamide added in step (4) is 1.67 kg, and the amount of potassium aluminum sulfate dodecahydrate added is 3.34 kg.

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Abstract

The invention discloses a method for treating wastewater containing an impregnating agent, and belongs to the technical field of sewage treatment. The method comprises the following steps that the wastewater containing the impregnating agent is fed into an insulating reaction kettle; direct current is used for electrifying the wastewater containing the impregnating agent; NaOH is added into the reaction kettle, and uniform stirring is carried out, so that the pH value is kept between 8.8 and 9.0; a flocculating agent is added; NaCl is added; the reaction kettle is heated and pressurized at 70-90 DEG C and at 1.8-3.6 MPa, a reaction is carried out for 1-2.5 hours, electrifying is stopped, and solid-liquid separation is carried out. The method for treating the wastewater containing the impregnating agent has the advantages that the wastewater containing the impregnating agent is treated through demulsification, addition of the flocculating agent and electrocoagulation, the oil stain treatment rate reaches 99.5%, the COD removal rate reaches 98.3%, the SS removal rate reaches 98.5%, the treated wastewater can be directly recycled, most of sludge is grease components, and the grease components after vacuum suction filtration can serve as a dye.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment method for wastewater containing a wetting agent. Background technique [0002] In the glass fiber pool kiln drawing process, the glass fiber needs to be coated with a sizing agent, which plays a role in bundling, bonding and improving the textile performance of the raw yarn. Since the drawing head is running at high speed during the drawing process, there are a large number of different formulations. The sizing agent is centrifugally thrown out into the waste water pool, and the waste water from cleaning the wire drawing equipment also enters the waste water pool together, forming a large amount of sizing agent waste. The wetting agent is an emulsified liquid. When it flows into the waste water pool and mixes with other waste water, although the concentration is reduced, it is still emulsified. [0003] Wetting agent wastewater is a kind of organic wastewater, and it...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F101/30
CPCC02F1/02C02F1/465C02F1/467C02F1/4674C02F1/5236C02F1/56C02F1/66C02F9/00C02F2101/30
Inventor 陆海李科闫博佼任贺李雪琪冯伟豪
Owner JILIN JIANZHU UNIVERSITY
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